HV9980
Features
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3-Channel LED Array Driver IC
Integrated 200V, 25Ω (typ.) MOSFETs
Programmable output current to 80mA per channel
TTL compatible PWM dimming inputs
3-Phase synchronous operation
Leading edge blanking
Short circuit protection with skip mode
Over-temperature protection
illumination. The output currents are programmed by
controlling peak source current in each of the three internal
200V, 25Ω switching MOSFETs.
The peak current is detected by monitoring voltage at external
sense resistors connected to RSENSE1-3. The switching
MOSFET is turned off when the corresponding current sense
signal exceeds the reference voltage applied at REF1-3 (in
the case of normal output signal polarity). Beginning of the
next switching cycle is determined by the external clock
signal received at the CLK input. All three channels operate
at a switching frequency of 1/6 of the external clock frequency
and positioned 120º out-of-phase for the purpose of input and
output ripple current reduction. Each channel is protected
from an output short circuit condition. When an over-current
condition is detected in the output switch (RSENSE1-3),
the corresponding channel shuts down for 200us. HV9980
recovers automatically, when the short circuit condition is
removed. Each current sense input (CS1-CS3) is equipped
with a leading edge blanking delay to prevent false triggering
of the current sense comparators due to circuit parasitics.
Over-temperature protection is included to prevent
destructive failures due to over-heating. Programmable
slope compensation is available at each CS input. AGND and
PGND1-3 must be tied together on the printed circuit board.
VDD1-3 must be also connected together on the PCB.
Applications
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LCD panel backlighting
DLP RPTV or projector LED engine driver
RGB decorative lighting
General LED lighting
General Description
The HV9980 is a fully integrated 3-channel peak-current
PWM controller for driving buck converters in constant output
current mode. It is optimized for use with a large array of
20~80mA LED strings, where multiple HV9980 ICs are used
sharing a common clock and a common reference voltage.
Both the clock and the voltage reference are external to the
HV9980 for improved output current accuracy and uniform
Typical Application Circuit
+V
IN
C
IN
C1
D1
L1
C2
D2
L2
C3
D3
L3
21
17
16
R
REF1
1
PWMD1
PWMD2
PWMD3
CLOCK
POL
4
REF1
9
C
REF1
12
U1
HV9980WG
7
1
R
REF2
C
REF2
REF2
3
6
2
10
2
23
22
24
8
19
18
20
5
AGND
11
14
15
13
R
REF3
C
REF3
REF3
C
DD1
1
R
SENSE1
C
DD2
1
2
R
SENSE2
2
C
DD3
3
R
SENSE3
3
3
+8V
HV9980
Ordering Information
Package Option
Device
15.40x7.50 body
2.65mm height (max)
1.27mm pitch
Pin Configuration
24-Lead SOW
REF1
1
24
PGND1
CS1
RSENSE1
DRAIN1
PGND2
CS2
RSENSE2
DRAIN2
DRAIN3
RSENSE3
CS3
PGND3
VDD1
CLK
PWMD1
AGND
POL
REF2
VDD2
2
23
3
22
HV9980
-G indicates package is RoHS compliant (‘Green’)
HV9980WG-G
4
21
5
20
6
19
7
18
8
17
Absolute Maximum Ratings
Parameter
Supply voltage, V
DD
Drain1-3 outputs
CS1-3 inputs
Other inputs and outputs
Supply current, I
DD
Power dissipation (T
A
= +25°C)
Thermal impedance (θ
JA
)
Operating ambient temperature range
Operating junction temperature range
Storage temperature range
Value
-0.3V to +10V
-0.3V to +200V
-0.3V to +5.0V
-0.3V to V
DD
+10mA
1300mW
60 C/W
O
PWMD2
REF3
VDD3
PWMD3
9
16
10
15
11
14
12
13
24-Lead SOW
(top view)
Product Marking
Top Marking
H V 998 0 WG
LLLLLLLLLL
Y YWW
-40°C to +85°C
-40°C to +125°C
1
-40°C to +150°C
2
-65°C to +150°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent
damage to the device. These are stress ratings only, and functional operation of the device
at these or any other conditions beyond those indicated in the operational sections of the
specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability. All voltages referenced to ground.
Bottom Marking
CCCCCCCCCCC
AAA
YY = Year Sealed
WW = Week Sealed
L = Lot Number
C = Country of Origin
A = Assembler ID*
= “Green” Packaging
*May be part of top marking
Notes:
1. Operation out of this range will not guarantee electrical characteristics
described in this datasheet.
2. Operation out of this range will be destructive to the IC.
24-Lead SOW (WG)
Electrical Characteristics
(The specifications are at T = 25°C and V
A
DD
= 8.0V, unless otherwise noted.)
Sym
Parameter
*
-
*
Min
-
-
-
Typ
-
500
-
Max
5.3
-
3.0
Units
V
mV
mA
Conditions
VDD falling
---
Total of VDD1 - VDD3
Supply Input (VDD1 - VDD3)
V
DD(UVLO)
V
DD
undervoltage threshold
∆V
DD(UVLO)
I
DD
V
DD
undervoltage hysteresis
Operating supply current
High Voltage Switches (DRAIN1 - RSENSE1, DRAIN2 - RSENSE2, DRAIN3 - RSENSE3)
V
BR
Breakdown voltage
*
210
-
-
V
---
R
ON
I
SAT
On-resistance
DRAIN saturation current
-
*
-
200
25
-
45
-
Ω
mA
I
DRAIN
= 50mA, V
RSENSE
= 0V
V
DRAIN
= 120V, V
RSENSE
= 1.3V
* Denotes the specifications which apply over the full operating ambient temperature range of -40°C < T
A
< +85°C.
2
HV9980
Electrical Characteristics
(cont.) (The specifications are at T = 25°C and V
A
DD
= 8.0V, unless otherwise noted.)
Sym
V
CS(LIM)
T
SKIP
T
BLANK
V
OS
T
DELAY
T
DELAY(LIM)
F
SW(max)
K
SW
φ
2
φ
3
T
OFF
T
ON
V
CLK,HI
V
CLK,LO
V
PWMD,HI
V
PWMD,LO
R
PWMD
T
OT
T
HYST
Parameter
Short circuit protection threshold
Short circuit recovery delay
Leading edge blanking delay
Input offset voltage
Propagation delay CS-to-DRAIN
Shutdown delay CS-to-DRAIN
Maximum switching frequency
Frequency divider ratio
DRAIN1-DRAIN2 phase delay
DRAIN1-DRAIN3 phase delay
CLK high time
CLK low time
CLK Input high
CLK Input low
PWMD Input high
PWMD Input low
PWMD Pull down resistance
Over temperature trip limit
Temperature hysteresis
*
-
-
*
*
*
*
-
-
-
-
-
*
*
*
*
-
-
-
Min
1.0
-
120
-7.0
-
-
500
-
-
-
50
50
2.0
-
2.0
-
100
125
-
Typ
-
200
-
-
-
-
-
6
120
240
-
-
-
-
-
-
200
140
60
Max
1.3
-
220
7.0
150
0.5
-
-
-
-
-
-
-
0.8
-
0.8
300
-
-
Units
V
µs
ns
mV
ns
µs
kHz
-
deg
deg
ns
ns
V
V
V
V
kΩ
°C
°C
Conditions
---
---
---
---
V
CS
- V
REF
= 50mV
V
CS
= V
CS(LIM)
+ 100mV, V
REF
> V
CS(LIM)
f
CLK
= 3.0MHz
Guaranteed by design
Guaranteed by design
Guaranteed by design
---
---
---
---
---
---
PWMD = 5.0V
Guaranteed by design
Guaranteed by design
Current Sense Comparators (CS1 - REF1, CS2 - REF2, CS3 - REF3)
Oscillator Input and Frequency Divider (CLK)
PWM Dimming (PWMD1, PWMD2, PWMD3)
Over Temperature Protection
* Denotes the specifications which apply over the full operating ambient temperature range of -40°C < T
A
< +85°C.
3
HV9980
Typical Performance Characteristics
(T
J
= 25
O
C unless otherwise noted)
500
450
400
350
300
250
200
20
V
DD
= 6V
V
DD
= 7V
V
DD
= 9V
DRAIN Current (mA)
500
450
400
350
300
250
200
150
V
RSENSE
= 0V
V
RSENSE
= 0.5V
V
RSENSE
= 1V
V
RSENSE
= 1.5V
V
RSENSE
= 2V
DRAIN Current (mA)
V
DD
= 8V
V
RSENSE
= 3V
40
60
80
100 120
DRAIN Voltage (V)
140
160
180
40
60
100
DRAIN Voltage (V)
140
180
100
20
Output Saturation Current
(I
DRAIN
vs. V
DRAIN
at V
RSENSE
= 0V)
Output Saturation Current
(I
DRAIN
vs. V
DRAIN
at V
DD
= 8.0V)
500
450
V
RSENSE
= GND
V
RSENSE
=
0.5V
DRAIN Current (mA)
500
V
RSENSE
= 0.8V
DRAIN Current (mA)
400
350
300
250
200
150
100
20
40
60
80
V
RSENSE
= 1V
460
420
V
RSENSE
= 2V
380
340
V
RSENSE
= 3V
100
120
140
160
180
DRAIN Voltage (V)
300
-40
-15
10
35
60
85
Junction Temperature (°C)
110
Output Saturation Current
(I
DRAIN
vs. V
DRAIN
at V
DD
= 9.0V)
Output Saturation Current
(I
DRAIN
vs. T
J
at V
DD
= 9.0V)
45
110.0
40
35
30
Propagation Delay (ns)
-40
-15
10
35
60
85
110
100.0
ON Resistance (Ω)
90.0
25
20
80.0
15
Junction Temperature (°C)
70.0
-40
-15
Junction Temperature (°C)
10
35
60
85
110
(R
ON
vs. T
J
at V
DD
= 8.0 or 9.0V)
ON Resistance
CS-to-DRAIN Propagation Delay
(T
DELAY
vs. T
J
at V
DD
= 8.0 or 9.0V)
4
HV9980
Typical Performance Characteristics
(cont.) (T
J
= 25
O
C unless otherwise noted)
740
280.0
250.0
220.0
190.0
160.0
130.0
Current Limit Threshold (mV)
735
730
725
Blanking Delay (ns)
720
-40
-15
Junction Temperature (°C)
10
35
60
85
110
100.0
-40
-15
10
35
60
85
110
Junction Temperature (°C)
Short Circuit Threshold Voltage
(V
CS(LIM)
vs. T
J
at V
DD
= 8.0 or 9.0V)
Leading Edge Blanking Delay
(T
BLANK
vs. T
J
at V
DD
= 8.0 or 9.0V)
Short Circuit Propagation Delay (ns)
250.0
230.0
210.0
190.0
170.0
150.0
-40
-15
Junction Temperature (°C)
10
35
60
85
110
Short Circuit Protection Delay
(T
DELAY(LIM)
vs. T
J
at V
DD
= 8.0 or 9.0V)
5
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